Use a capillary to suck a small amount and place it on the same thin-layer plate. Use dichloromethane to expand with methanol=3:1, 10:1, 20:1, and 40:1. After developing and developing the color, the results are as follows:
Using a capillary tube to absorb a small number of points on the same thin plate with dichloromethane than methanol , 3:1, 10:1, 20:1, 40:1 expander gradient unfolded and then colored, the results are as follows:
The results are as follows: a small amount of spots are absorbed on the same thin layer plate by capillary tube, and then developed with dichloromethane in gradient ratio of methanol = 3:1, 10:1, 20:1, 40:1<br>